I asked:
>Messages sent to the list arrive at the subscribers mailbox with a "To:"
>field of, for example, mylist at example.com rather than the subscribers email
>address.
Mark Sapiro responded:
> You need to put
>> OWNERS_CAN_ENABLE_PERSONALIZATION = Yes
>> in mm_cfg.py. Then you will see the personalize options on the
> Non-digest options page and you can set Full which is what you want.
Thanks! That worked perfectly!